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           package org.tela_botanica.client.composants;
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           import java.util.HashMap;
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           import java.util.List;
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           import java.util.Map;
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           import org.tela_botanica.client.composants.pagination.ChargeurListe;
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           import org.tela_botanica.client.composants.pagination.Proxy;
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           import org.tela_botanica.client.composants.pagination.TransformateurJSONaModelData;
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           import org.tela_botanica.client.interfaces.Rafraichissable;
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           import org.tela_botanica.client.composants.GrilleParametrable;
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           import com.extjs.gxt.ui.client.Style.SortDir;
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           import com.extjs.gxt.ui.client.data.BasePagingLoadConfig;
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           import com.extjs.gxt.ui.client.data.LoadEvent;
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           import com.extjs.gxt.ui.client.data.Loader;
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           import com.extjs.gxt.ui.client.data.ModelData;
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           import com.extjs.gxt.ui.client.data.ModelType;
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           import com.extjs.gxt.ui.client.data.PagingLoadConfig;
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           import com.extjs.gxt.ui.client.data.PagingLoadResult;
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           import com.extjs.gxt.ui.client.event.Events;
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           import com.extjs.gxt.ui.client.event.GridEvent;
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           import com.extjs.gxt.ui.client.event.Listener;
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           import com.extjs.gxt.ui.client.store.ListStore;
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           import com.extjs.gxt.ui.client.store.Store;
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           import com.extjs.gxt.ui.client.store.StoreEvent;
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           import com.extjs.gxt.ui.client.widget.ContentPanel;
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           import com.extjs.gxt.ui.client.widget.grid.ColumnConfig;
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           import com.extjs.gxt.ui.client.widget.grid.ColumnModel;
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           import com.extjs.gxt.ui.client.widget.grid.EditorGrid;
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           import com.extjs.gxt.ui.client.widget.grid.GridSelectionModel;
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           import com.extjs.gxt.ui.client.widget.grid.RowNumberer;
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           import com.extjs.gxt.ui.client.widget.layout.FitLayout;
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           import com.extjs.gxt.ui.client.widget.toolbar.PagingToolBar;
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           public class GrillePaginable<D extends ModelData>  extends ContentPanel implements Rafraichissable, GrilleParametrable<D> {
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           	//+---------------------------------------------------------------------------------------------------------------+
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           	// Attributs
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           	// Pagination
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           	private int start = 0;
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           	private int limit = 50;
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           	// Récupération, stockage et pagination des données
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           	private ModelType modelType = null;
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           	private Proxy<D> proxy = null;
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           	private TransformateurJSONaModelData<PagingLoadResult<D>> reader = null;
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           	private BasePagingLoadConfig plc = null;
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           	private ChargeurListe<PagingLoadResult<D>> loader = null;
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           	private ListStore<D> storeGrille = null;
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           	// Elements graphiques
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           	EditorGrid<D> grille = null;
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           	List<ColumnConfig> colonnes = null;
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           	ColumnModel modeleDeColonnes = null;
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           	//+---------------------------------------------------------------------------------------------------------------+
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           	// Constructeur
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           	public GrillePaginable(ModelType modeltype, HashMap<String, String> virtualFields, Proxy<D> proxy, List<ColumnConfig> colonnes, ColumnModel modeleDeColonnes) {
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           		// Récupération des paramètres
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           		this.modelType = modeltype;
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           		this.proxy = proxy;
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           		this.colonnes = colonnes;
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           		this.modeleDeColonnes = modeleDeColonnes;
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           		// Formatage du conteneur;
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           		this.setLayout(new FitLayout());
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           		// Création des objets pour la récupération  et la pagination des données
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           		plc = new BasePagingLoadConfig();
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           		plc.setLimit(limit);
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           		plc.setOffset(start);
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           		reader = new TransformateurJSONaModelData<PagingLoadResult<D>>(modelType, virtualFields);
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           		creerChargeurDeListe();
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           		creerGrille();
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           	}
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           	//+---------------------------------------------------------------------------------------------------------------+
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           	// Accesseurs
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           	public EditorGrid<D> getGrille() {
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           		return grille;
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           	}
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           	public ListStore<D> getStore() {
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           		return storeGrille;
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           	}
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           	public GridSelectionModel<D> getSelectionModel() {
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           		return grille.getSelectionModel();
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           	}
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           	public D getSelection() {
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           		return grille.getSelectionModel().getSelectedItem();
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           	}
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           	@SuppressWarnings("unchecked")
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           	public Proxy getProxy() {
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           		return this.proxy;
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           	}
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           	//+---------------------------------------------------------------------------------------------------------------+
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           	// Méthodes publiques
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           	public void rafraichir(Object nouvellesDonnees) {
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           	}
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           	//+---------------------------------------------------------------------------------------------------------------+
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           	// Méthodes privées
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           	private void creerChargeurDeListe() {
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           		loader = new ChargeurListe<PagingLoadResult<D>>(proxy, reader, this);
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                   loader.setLimit(plc.getLimit());
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                   loader.setOffset(plc.getOffset());
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           		loader.addListener(Loader.BeforeLoad, new Listener<LoadEvent>() {
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           			public void handleEvent(LoadEvent be) {
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           			}
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           		});
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           		loader.addListener(Loader.Load, new Listener<LoadEvent>() {
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           			public void handleEvent(LoadEvent be) {
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           			}
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           		});
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           	}
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           	private void creerGrille() {
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           		final PagingToolBar toolBar = new PagingToolBar(this.limit);
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           		toolBar.bind(loader);
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           		this.setBottomComponent(toolBar);
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           		storeGrille = new ListStore<D>(loader);
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           		storeGrille.addListener(Store.Add, new Listener<StoreEvent<D>>() {
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           			public void handleEvent(StoreEvent<D> ce) {
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           			}
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           		});
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           		storeGrille.addListener(Store.Remove, new Listener<StoreEvent<D>>() {
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           			public void handleEvent(StoreEvent<D> ce) {
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           			}
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           		});
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           		storeGrille.addListener(Store.Update, new Listener<StoreEvent<D>>() {
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           			public void handleEvent(StoreEvent<D> ce) {
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           			}
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           		});
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           		GridSelectionModel<D> modeleDeSelection = new GridSelectionModel<D>();
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           		grille = new EditorGrid<D>(storeGrille, modeleDeColonnes);
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           		grille.setHeight("100%");
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           		grille.setBorders(true);
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           		grille.setSelectionModel(modeleDeSelection);
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           		grille.getView().setForceFit(true);
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           		grille.setStripeRows(true);
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           		grille.setBorders(true);
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           		grille.setStateful(true);
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           		grille.addListener(Events.Attach, new Listener<GridEvent<D>>() {
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           	       public void handleEvent(GridEvent<D> be) {
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           	         PagingLoadConfig config = new BasePagingLoadConfig();
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           	         config.setOffset(start);
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           	         config.setLimit(limit);
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           	         Map<String, Object> state = grille.getState();
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           	         if (state.containsKey("offset")) {
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           	           int offset = (Integer)state.get("offset");
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           	           int limit = (Integer)state.get("limit");
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           	           config.setOffset(offset);
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           	           config.setLimit(limit);
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           	         }
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           	         if (state.containsKey("sortField")) {
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           	           config.setSortField((String)state.get("sortField"));
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           	           config.setSortDir(SortDir.valueOf((String)state.get("sortDir")));
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           	         }
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           	         loader.load(config);
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           	       }
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           	     });
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           		this.add(grille);
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           	}
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           	public void reload() {
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           		loader.load();
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           	}
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           }
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